libaml: fix fault when the second operand of comparison cannot be converted

2020-08-20 08:28:24 +02:00 · 2020-08-20 08:28:24 +02:00 · b6fde0c7b9
parent de34481f8b
commit b6fde0c7b9
1 changed files with 1 additions and 1 deletions
--- a/sys/src/libaml/aml.c
+++ b/sys/src/libaml/aml.c
@ -1524,7 +1524,7 @@ cmp1(void *a, void *b)
 		tag = TAG(a);
 		if(b == nil || TAG(b) != tag)
 			b = copy(tag, b);
-		if(TAG(b) != tag)
+		if(b == nil || TAG(b) != tag)
 			return -1;	/* botch */
 		switch(tag){
 		default: